Abstract: In this talk I will discuss calculation of ADS superpotential in 3 and 4 dimensions in SUSY QCD with F
In 4d an explicit instanton calculation exists when $F=N-1$, while in other cases the superpotential can be obtained by decoupling massive flavors. In 3d a similar instanton-monopole calculation of the superpotential exist in a pure SYM theory. I will argue that in a 4d theory compactified on a circle, one could obtain superpotential for all values of F by including multi-monopole contributions to the superpotential. In large and small radius limits one then obtains the exact superpotentials in 3 and 4 dimensions.